System Integration Test
The FAT test is always performed to ensure that the individual components and items of equipment meet the specified requirements and function correctly.
System integration testing, commonly referred to as SIT, is another process that verifies that the integrated equipment is suitable for use. In another words, it is performed to verify that equipment from various suppliers, which must interface with each other, fits and works together acceptably. These procedures are normally very project specific and relate to various equipment interfaces within the project.
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